The original Norman church of St Clederus was, apart from the tower, rebuilt in 1865. The tower is built of granite and is of late medieval date; the font is Norman and very plain.[2]
West of St Clether parish church is a holy well and associated chapel, said to be one of Cornwall's best preserved. The church and holy well are dedicated to Saint Cleder (or Clederus), one of the twenty-four children of Saint Brychan, a Welshsaint and King of Brycheiniog in the 5th century.
Arthur Langdon (1896) records five stone crosses in the parish of which four are at the old manor house of Basill Barton.[3]